/*
*    Qizx/open 3.0 beta
*
* This code is the open-source version of Qizx.
* Copyright (C) 2004-2009 Axyana Software -- All rights reserved.
*
* The contents of this file are subject to the Mozilla Public License 
*  Version 1.1 (the "License"); you may not use this file except in 
*  compliance with the License. You may obtain a copy of the License at
*  http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
*  WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
*  for the specific language governing rights and limitations under the
*  License.
*
* The Initial Developer of the Original Code is Xavier Franc - Axyana Software.
*
*/
using System;
using EvaluationException = System.Qizx.Api.EvaluationException;
using EvalContext = System.Qizx.XQuery.EvalContext;
using Focus = System.Qizx.XQuery.Focus;
using XQType = System.Qizx.XQuery.XQType;
using XQValue = System.Qizx.XQuery.XQValue;
using DistinctValueSequence = System.Qizx.XQuery.Dt.DistinctValueSequence;
namespace System.Qizx.XQuery.Fn
{
	
	public class DistinctValues:Function
	{
		public override Prototype[] Protos
		{
			get
			{
				return protos;
			}
			
		}
		
		internal static Prototype[] protos;
		
		public class Exec:Function.Call
		{
			public override XQValue eval(Focus focus, EvalContext context)
			{
				System.Globalization.CompareInfo collator = getCollator((args.Length <= 1)?null:args[1], focus, context);
				
				context.at(this);
				return new DistinctValueSequence(args[0].eval(focus, context), collator);
			}
		}
		static DistinctValues()
		{
			protos = new Prototype[]{Prototype.fn("distinct-values", XQType.ANY_ATOMIC_TYPE.star, typeof(Exec)).arg("srcval", XQType.ANY_ATOMIC_TYPE.star), Prototype.fn("distinct-values", XQType.ANY_ATOMIC_TYPE.star, typeof(Exec)).arg("srcval", XQType.ANY_ATOMIC_TYPE.star).arg("collationLiteral", XQType.STRING)};
		}
	}
}